The Lezyne Alloy Drive is a compact high volume hand pump made of custom CNC machined aluminum for precise and lightweight construction. Perfect for mountain biking, the HV design easily inflates tires to riding pressure with fewer strokes. The overlapping handle and barrel, with oversized piston and shaft, are integrated into a compact design. It comes equipped with Lezyne's ABS Flex Hose, which has a threaded Presta connection with ABS on one side and a threaded Schrader connection on the other. 112 grams and 90 psi.